CN217081780U

CN217081780U - Stainless steel flange with multistage seal structure

Info

Publication number: CN217081780U
Application number: CN202123284536.5U
Authority: CN
Inventors: 徐勇; 贾建义; 蒋宏峰
Original assignee: Baoding Xinyu Pipe Fittings Co ltd
Current assignee: Baoding Xinyu Pipe Fittings Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-29
Anticipated expiration: 2031-12-24

Abstract

The utility model relates to a ring flange technical field especially relates to a stainless steel flange with multistage seal structure. The sealing device comprises a groove arranged in the middle of the right side of a first flange plate, a sealing pipe arranged in the middle of the left side of a second flange plate, the sealing pipe is inserted into the groove, a clamping groove is arranged on the periphery of the left side of the groove, a sealing sleeve is clamped in the clamping groove, the groove and the outer wall of the sealing pipe are sealed through the sealing sleeve, an annular gasket is arranged on the left side of the sealing sleeve, the left end of the sealing pipe and the bottom of the groove are compressed and sealed through the annular gasket, primary sealing is realized through the matching of the sealing sleeve and the sealing pipe, secondary sealing is realized through the matching of the annular gasket and the left end of the sealing pipe, tertiary sealing between two flanges is realized through the annular gasket, and the sealing performance between the two flanges is greatly improved through a tertiary sealing structure; the sealing pipe can realize the positioning and installation of the annular sealing gasket.

Description

Stainless steel flange with multistage seal structure

Technical Field

The utility model relates to a ring flange technical field especially relates to a stainless steel flange with multistage seal structure.

Background

Flange plates, flange for short, are disc-shaped parts, and most commonly in pipeline engineering, the flange plates are mostly used in pairs, so that pipes and tubes are connected with each other, holes are formed in the flange plates, the two flanges are tightly connected through bolts, and the flanges are sealed through gaskets.

The traditional flange only clamps the gasket by two flanges for sealing, the sealing effect is poor, and if the installation between the two flanges is not standard, the leakage phenomenon is easy to occur; therefore, a flange structure is needed, which can realize multi-stage sealing effect and greatly improve the sealing performance between two flanges.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a stainless steel flange with a multi-stage sealing structure aiming at the technical defects, which comprises a groove arranged in the middle part of the right side of a first flange plate, a sealing pipe is arranged in the middle of the left side of the second flange plate and is inserted in the groove, the periphery of the left side of the groove is provided with a clamping groove, the sealing sleeve is clamped in the clamping groove, the groove and the outer wall of the sealing pipe are sealed by the sealing sleeve, the left side of the sealing sleeve is provided with an annular gasket, the left end of the sealing tube and the bottom of the groove are pressed and sealed by the annular gasket, the primary sealing is realized through the matching of the sealing sleeve and the sealing pipe, the secondary sealing is realized through the matching of the annular gasket and the left end of the sealing pipe, the three-time sealing between the two flanges is realized through the annular sealing gasket, and the sealing performance between the two flanges is greatly improved through the three-time sealing structure; the sealing pipe can realize the positioning and installation of the annular sealing gasket.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the flange comprises a first flange plate, a second flange plate, an annular sealing gasket, a bolt, a nut and a sealing sleeve; stainless steel pipelines are welded on the left side of the first flange plate and the right side of the second flange plate; the first flange plate is arranged on the left side of the second flange plate; the first flange plate and the second flange plate are fixedly locked through bolts and nuts; sealing tables are arranged on the right side of the first flange plate and the left side of the second flange plate; the annular sealing gasket is arranged between the left sealing platform and the right sealing platform; the sealing sleeve is arranged inside the first flange plate.

Further optimizing the technical scheme, the middle part of the right side of the first flange plate is provided with a groove; a sealing pipe is arranged in the middle of the left side of the second flange plate; the sealing tube is inserted in the groove.

Further optimizing the technical scheme, the annular sealing gasket is sleeved on the sealing pipe; the inner diameter of the annular sealing gasket is equal to the outer diameter of the sealing pipe.

Further optimizing the technical scheme, the periphery of the left side of the groove is provided with a clamping groove; the sealing sleeve is clamped in the clamping groove; the groove and the outer wall of the sealing pipe are sealed through a sealing sleeve.

Further optimizing the technical scheme, the left side of the sealing sleeve is provided with an annular pad; the inner diameters of the annular gasket, the groove and the sealing pipe are equal; the left end of the sealing pipe and the bottom of the groove are compressed and sealed through an annular gasket.

Further optimize this technical scheme, under first ring flange and second ring flange locking state, annular seal pad and ring gasket all are in the pressure seal state.

Compared with the prior art, the utility model has the advantages of it is following:

1. the sealing structure has the advantages that the sealing structure is matched with the sealing pipe to realize primary sealing, the annular gasket is matched with the left end of the sealing pipe to realize secondary sealing, the annular gasket is used for realizing tertiary sealing between the two flanges, and the sealing performance between the two flanges is greatly improved through the tertiary sealing structure.

2. The sealing tube not only can realize the multi-stage sealing function, but also can realize the positioning and mounting function of the annular sealing gasket.

Drawings

Fig. 1 is a perspective view of a stainless steel flange with a multi-stage sealing structure.

FIG. 2 is a partial cross-sectional view of an inner mounting structure of a stainless steel flange with a multi-stage seal structure.

Fig. 3 is a partial exploded view of an internal mounting structure of a stainless steel flange with a multi-stage seal structure.

Fig. 4 is a partial cross-sectional view of the inner mounting structure of the first flange.

Fig. 5 is a partial cross-sectional view of the internal structure of the first flange.

In the figure: 1. a first flange plate; 101. a groove; 102. a card slot; 2. a second flange plate; 201. a sealing tube; 3. an annular seal; 4. a bolt; 5. a nut; 6. sealing sleeves; 601. an annular pad; 7. stainless steel pipeline; 8. and (7) a sealing table.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: referring to fig. 1 to 5, a stainless steel flange with a multi-stage sealing structure is characterized in that: the flange comprises a first flange plate 1, a second flange plate 2, an annular sealing gasket 3, a bolt 4, a nut 5 and a sealing sleeve 6; stainless steel pipelines 7 are welded on the left side of the first flange plate 1 and the right side of the second flange plate 2; the first flange plate 1 is arranged on the left side of the second flange plate 2; the first flange plate 1 and the second flange plate 2 are fixedly locked through bolts 4 and nuts 5; sealing platforms 8 are arranged on the right side of the first flange plate 1 and the left side of the second flange plate 2; the annular sealing gasket 3 is arranged between a left sealing platform 8 and a right sealing platform 8; the sealing sleeve 6 is arranged inside the first flange plate 1.

Preferably, a groove 101 is formed in the middle of the right side of the first flange plate 1; a sealing pipe 201 is arranged in the middle of the left side of the second flange plate 2; the sealing tube 201 is inserted into the groove 101.

Preferably, the annular sealing gasket 3 is sleeved on the sealing pipe 201; the inner diameter of the annular sealing gasket 3 is equal to the outer diameter of the sealing pipe 201.

Preferably, a clamping groove 102 is formed in the periphery of the left side of the groove 101; the sealing sleeve 6 is clamped in the clamping groove 102; the groove 101 and the outer wall of the sealing tube 201 are sealed by a sealing sleeve 6.

Preferably, the left side of the sealing sleeve 6 is provided with an annular pad 601; the inner diameters of the annular gasket 601, the groove 101 and the sealing tube 201 are equal; the left end of the sealing tube 201 and the bottom of the groove 101 are pressed and sealed through an annular gasket 601.

Preferably, the annular sealing gasket 3 and the annular gasket 601 are in a compression sealing state under the locking state of the first flange plate 1 and the second flange plate 2.

The operating principle, as shown in fig. 1-5, when installing first ring flange 1 and second ring flange 2 on two stainless steel pipelines 7 about, 1 right side middle part of first ring flange is provided with recess 101, recess 101 left side periphery is provided with draw-in

groove

102, 6 joints of seal cover are inside draw-in groove 102, with 6 joints of seal cover inside

recess

101, 2 left side middle parts of second ring flange are provided with sealed tube 201, sheathe the ring packing 3 on sealed

tube

201, 3 internal diameters of ring packing equals sealed tube 201 external diameters, the setting of sealed tube 201 can play the effect of 3 location installations of ring packing, and 3 installations of ring packing are simple and convenient, can prevent 3 dislocation of ring packing.

After the installation is finished, the sealing tube 201 on the second flange plate 2 is inserted into the groove 101 of the first flange plate 1, when the sealing tube 201 is inserted into the groove 101, the sealing tube is continuously pushed to the left side, the sealing tube 201 penetrates through the sealing sleeve 6, the annular pad 601 is arranged on the left side of the sealing sleeve 6, the inner diameters of the annular pad 601, the groove 101 and the sealing tube 201 are equal, the left end of the sealing tube 201 and the bottom of the groove 101 are compressed and sealed through the annular pad 601, the left end of the sealing tube 201 is in contact with the annular pad 601, the outer wall of the sealing tube 201 and the groove 101 can be sealed under the action of the sealing sleeve 6, and therefore a primary sealing effect is achieved.

The first flange plate 1 and the second flange plate 2 are fixedly locked through the bolts 4 and the nuts 5, the sealing tube 201 can be pushed to compress the annular gasket 601 at the bottom of the groove 101 in the process that the first flange plate 1 and the second flange plate 2 are compressed oppositely, the left end of the sealing tube 201 and the bottom of the groove 101 can be sealed through the action of the annular gasket 601, and therefore the secondary sealing effect is achieved.

In the process that the first flange plate 1 and the second flange plate 2 move towards the middle part in opposite directions to compress, the annular sealing gasket 3 can be compressed under the action of the left sealing platform and the right sealing platform 8, and the two flange plates can be compressed and sealed through the annular sealing gasket 3, so that the three-time sealing effect is realized.

Under first ring flange 1 and the 2 locking state of second ring flange, annular seal pad 3 and annular pad 601 all are in the pressure tight seal state, to sum up, realize once sealedly through seal cover 6 and the cooperation of sealed tube 201, realize secondary seal through the cooperation of annular pad 601 and sealed tube 201 left end, realize the cubic through annular seal pad 3 and seal between two flanges, improved the sealing performance between two flanges greatly through cubic seal structure.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a stainless steel flange with multistage seal structure which characterized in that: the flange comprises a first flange plate (1), a second flange plate (2), an annular sealing gasket (3), a bolt (4), a nut (5) and a sealing sleeve (6); stainless steel pipelines (7) are welded on the left side of the first flange plate (1) and the right side of the second flange plate (2); the first flange plate (1) is arranged on the left side of the second flange plate (2); the first flange plate (1) and the second flange plate (2) are fixedly locked through bolts (4) and nuts (5); sealing tables (8) are arranged on the right side of the first flange plate (1) and the left side of the second flange plate (2); the annular sealing gasket (3) is arranged between the left sealing platform and the right sealing platform (8); the sealing sleeve (6) is arranged inside the first flange plate (1).

2. The stainless steel flange with the multistage sealing structure of claim 1, wherein: a groove (101) is formed in the middle of the right side of the first flange plate (1); a sealing pipe (201) is arranged in the middle of the left side of the second flange plate (2); the sealing pipe (201) is inserted in the groove (101).

3. The stainless steel flange with the multistage sealing structure according to claim 2, wherein: the annular sealing gasket (3) is sleeved on the sealing pipe (201); the inner diameter of the annular sealing gasket (3) is equal to the outer diameter of the sealing pipe (201).

4. The stainless steel flange with the multistage sealing structure according to claim 2, wherein: a clamping groove (102) is formed in the periphery of the left side of the groove (101); the sealing sleeve (6) is clamped in the clamping groove (102); the groove (101) and the outer wall of the sealing pipe (201) are sealed through a sealing sleeve (6).

5. The stainless steel flange with the multistage sealing structure according to claim 2, wherein: an annular pad (601) is arranged on the left side of the sealing sleeve (6); the inner diameters of the annular gasket (601), the groove (101) and the sealing pipe (201) are equal; the left end of the sealing pipe (201) and the bottom of the groove (101) are pressed and sealed through an annular gasket (601).

6. A stainless steel flange with a multi-stage sealing structure according to claim 5, characterized in that: and under the locking state of the first flange plate (1) and the second flange plate (2), the annular sealing gasket (3) and the annular gasket (601) are in a pressing and sealing state.